Process and plant for production of raw stainless steel castings
US5725696A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1996 |
| Grant date | Mar 10, 1998 |
| Priority date | — |
| Expiry date | Apr 8, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D9/56
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention refers to a process for production of raw stainless steel castings, in particular for stainless steel strip, covering rolling and annealing of cast material if required, as well as de-scaling, in particular by pickling in aqueous media, and coiling for raw stainless steel strip if necessary. In order to achieve greater flexibility as regards steel grades that can be treated and dimensions of the castings, the material is to be heat-treated in batches and preferably also annealed, cooled and de-scaled immediately after the final heat treatment stage, without intermediate storage, in batches. In a process covering the process stages for casting, rolling of the cast material if necessary, cooling, as well as de-scaling, in particular by pickling in aqueous media, and coiling, if necessary, to form raw stainless steel coils, the material is to be cast in batches and de-scaled immediately afterwards without intermediate storage in order to obtain the same advantage. The invention also covers equipment to carry out the process described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.